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Hopland Research and Extension Center
  
  
   

 Cost summary
A note about the costs…

The cost estimates presented are very preliminary. When funding is in place, detailed design of the “Green-Works” elements can be undertaken and more accurate
  estimated construction cost soft costs **  total cost
1.0 water works      
1.1 rainwater storage and re-use $24,000.00 $4,000.00 $28,000.00
1.2 greywater re-use $18,000.00 $8,000.00 $26,000*
1.3 on-site blackwater treatment $180,000.00 $30,000.00 $210,000*
1.4 building entry water feature $45,000.00 $10,000.00 $55,000.00
1.5 compost toilets $35,000.00 $8,000.00 $43,000.00
2.0 food works      
2.1 composting station $750.00 $0.00 $750.00
3.0 energy works      
3.1 solar thermal system $16,000.00 $5,000.00 $21,000.00
3.2 wind-powered well pump $34,000.00 $6,000.00 $40,000.00
3.3 site built photovoltaics ***  $45,000.00 $6,000.00 $51,000.00
3.4 night-flush mechanical cooling $12,000.00 $6,000.00 $18,000.00
3.5 geothermal energy + radiant floor $36,000.00 $12,000.00 $48,000.00
4.0 shelter works      
4.1 L.E.E.D. certifcation $0.00 $40,000.00 $40,000.00
4.2 higher performance insulation $10,000.00 $0.00 $10,000.00
4.3 museum exhibits $24,000.00 $2,000.00 $26,000.00
4.4 natural interiors $24,000.00 $2,000.00 $26,000.00
4.5 “green” furniture + cabinetry $28,000.00 $4,000.00 $32,000.00
4.6 FSC certified lumber $12,000.00   $12,000.00
5.0 site works      
5.1 wetland pond at entry walk $75,000.00 $9,000.00 $84,000.00
5.2 permeable parking lot $90,000.00 $9,000.00 $99,000.00
5.3 landscape elements $20,000.00 $12,000.00 $32,000.00
5.4 meeting terraces $100,000.00 $12,000.00 $112,000.00
total (with 1.2 greywater re-use)     $810,750*
total (with 1.3 on-site blackwater treatment)     $998,750*
       
* Note that items 1.2 (greywater re-use) and 1.3 (on-site blackwater treatment) are an “either-or” choice in terms of cost.
** Soft costs are the costs for non-physical items: permits, fees, overhead and profit and design professional fees. With innovative projects such as this, there are extra hours needed for obtaining the necessary permits and permissions for construction.
*** An alternative energy scenario could be to have an Energy Service Company (ESCO) construct and finance a site-wide photovoltaic system, which would recover the costs through savings on the utility bill; i.e., the Center continues to pay their typical utility bill and the ESCO keeps the difference between that and the new energy bill.